"Divine love always has and Divine love always will provide our every need", goes the Metaphysical statement.
The pregnant mouse is the card of poverty: poor as a mouse. It is also about your needs being met.
There is also emotional stress and the feel of threat (you might feel very small in a much larger world). Are you focusing on lack and in need of support?
The mouse also tells us to be patient. The seeds are planted and will take some time to develop and be delivered, like a baby.
Will we have good health and our needs met today? There is a degree of uncertainty today with the swamp. We are cautioned about our steps and the lack of clarity. Still when we look at the Pregnant Mouse, we see they are small and as long as they stay on the path all will be well. Be patient because the Divine always provides our every need.
You are loved and blessed.